Guider



Sept. 1, 1931. F. A. LANE 1,820,980

GUIDER Fiied Jan. 13. 19:51

IN V EN TOR.

' A TTORNEYS. j) wvdupmy Patented Sept. 1, 1931 warren- STATES PATENT OFFICE FRANK A. LANE, OF PROVIDENCE, RHODE ISLAND, ASSIGNOR TO THE TEXTILE- FINISHING MACHINERYCOMPANY, A CORPORATION OF RHODE ISLAND GUIDER Application filed. January 13, 1931. Serial No. 508,459.

elimination of vibration of the feeler mem-' is her. I

Another object of the invention is the con.- struction by which the contact members will positively seat to insure even and secure contact while the device is in operation.

' 9.0 A further object. of. the invention is the provision of a short feeler arm, whereby the motion thereof may be better controlled.

A still further object of the invention is the provision of means for minimizing sparking at the contact points and causing a more even functioningof the device.

lVith these and other objects and advantageous features in View, the invention consists of a novel arrangement of parts more 39 fully disclosed in the detailed description following, in conjunction with the accompanying drawings, and more particularly set forth in the appended claims.

1 In thedrawings':

35 Fig. 1 is a top plan View of one of the guider units showing the position of, the breaker or contact means mounted thereon, which is the subject of'this invention; I

. Fig. 2 is a sectional view through the cas- 49 ing of the contactor breaker unit;

Fig. 3 is QASGCiJlOIltLl viewon the line 33 of Figure 2; i

Fig. 4 is-a section on the line 44: of Figure2; and

45 Fig. 5 is a diagrammatic viewshowing the wiring for connecting the electrical guiderwhen in use.

- This invention relates to a guider such as disclosed in Patent No. 1,752,966 to E. A.

Rusden, dated April 1, 1930, which is elecnuts 29 and 80 on either side of the wall trically operated, one unit of which is shown generally in Figure 1 in this application. This unit comprises a guide plate which is suitably supported on the bracket 11 havinga .hub 12 for adjustably mounting the same upon the frame of a tentering machine or the like. A roll 13 is rotatably mounted upon the fixed axis 14 which is mounted on the frame 11 and the movable roll 15 is swingably mounted to engage the roll 18 througha slot in the plate 10 (not shown). This roll 15 moves in response to the action of an electromagnet 16, which upon being energized, attracts the armature any suitable transformer 20 for reducing the voltage and a rectifier 21 for changing the alternating current of the supply to direct current in the circuit for controlling the electromagnet. Contact members 22 and 23 are positioned in this circuit and are controlled in their action through the feeler member 2a which may be engaged by the edge of the work traveling between the rolls. The contacts are separated to break the circuit and cause the release of the nipping engagement of the rolls due to the release of the armature, and consequent swinging the rolls from nipping position.

The separable contacts are mounted in a casing 25 which is suitably secured to a portion 26 of the framework of the guider unit. Upon the wall 27 of the casing 25 the contact member 23 is fixedly mounted in adjusted position, he same being secured at the end of a threaded rod 28 with the 0 27. A second nut 31 may be provided for connection of this contact member in the electric circuit. 7

An arm 82 is pivotally mounted upon a pin 33 extending between the walls 3 1 and 35 of the casing, which arm carries at its free end 36 the contact member 22, while the spring 37 is secured to the wall 38 by the binding post 59 and secured to thearm by means of a rivet 39 and tends to force the 7 contacts 22 and 23 into accurate and positive engagement. This spring 37 conducts current from the binding post 59 to the contact 22. I

The casing 25 may be of metal, as illustrated, and theparts conductingcurrent will be insulated from the casing as by a. fibre washer 40, insulating backingstrip 11, insulating bushing 42, insulating washers 13 and {L4, while in other instances where the casing is made of insulating material such as bakelite, certain types of fibre "or.

similar material, these insulating parts may be eliminated.

movement of the feeler in the direction illustrated by the arrow 51 to dotted line position in Figure 4', will cause separation of the contacts 22 and 23, to break the circuit and permit the work to be drawn back to the center of its travel by the opposite unit, after which the feeler being urged through the spring 37 will follow the work until the contacts 22 and 23 again engage to energize the armature to cause nipping engagement of the rolls. The feeler, however, by being mounted uoon this control member may have considerable play without affecting the contacts and thus no vibrations of the feeler or contacts occur. by mounting this unit as illustrated in Figur e 1, the fe eler arm is relatively short,

thus causing better control of the action thereof.

For replacement of parts, the pins 33 and 46 maybe driven from position and a new arm or control member may be mounted in place, after which the pins will be replaced and their ends spread, as illustrated in Figure 2 to securely hold them in the desired position.

here a frequent interruption of the current occurs, there is apt to be sparking when appreciable voltages are used at the point of breaking the circuit such as at the contact members 22 and 23, and in order to minimize this-sparking andbetter control the action of the device, I have found it desirable to secure a condenser 52 in the electric circuit. The condenser is of a small tubular form and is supported by the bracket 53 secured to the casing and connected to the fixed contact terminal between the nuts and 31. The condenser has one of its plates connected to the electric circuit Further,

as at 54: and its other plate connected to the ground as at 55, see Figure 5, and I have found it convenient to ground the condenser by attaching it to the frame of the machine. This condenser in operation eliminates the surge of the current and at the time of breaking stores up the energy until the contacts are again actuallv in contact.

. While I have described certain construction forms which embody theprinciples of my invention, it is obvious that other desired changes in arrangement may be made within the spirit and the scope of the invention as defined in the appended claims.

I claim:

' 1. In a stretching and guiding apparatus, a pair of units, each unit comprising a pair ofrolls arranged to engage the work on opposite surfaces thereof, said rolls being mounted to be relatively moved to and from u work nipping position, electromagnetic means for relatively 'moving said rolls to control nipping position, means connecting said electromagnetic means in anenergizing circuit, separable contact means in said circuit, yielding means for causing engagement of said contact means, means-independent of said contact means for controlling engagement of said contact means, and a feeler member positioned to be engaged by the edgefof the work and operatively connected to said contact controlling means.

2. In a stretching and guiding apparatus, a pair of units, each unit comprising a pair of rolls arranged to engage the work on opposite surfaces thereof, said rolls being mounted to be relatively moved to and from work nipping position, electromagnetic means for relatively moving said rolls to control nipping position, means connecting said electromagnetic'means in an energizing circuit, separable contact means in said circuit, yielding means for causing engagement of said contact means, a rotatably mounted member separate from said contact means for controllin engagement of said contact means, and a fieeler member positioned to be engaged by the edge of the work and operatively connected to said member for-controlling said contact means.

3. In a stretching and guiding apparatus, a pair of units, each unit comprising a pair of rolls arranged to engage the work on opposite surfaces thereof, said rolls being mounted to be relatively moved to and from work nipping position, electromagnetic means for relatively moving said rolls to control nipping position, means connecting said electromagnetic means in an energizing circuit, separable contact means in said circuit, yielding means for causing engagement of said contact means, a'rotatably mounted member separate from'said contact -means andhavinga cam surface for controlling engagement of said contact means,

and a feeler member positioned to be engage-d by the edge of thework and opera tively connected to said contact controlling member.

I 4. In a stretching and guiding apparatus,

, moving-saidmovable contact member to and from engaging position, and a feeler member positioned to be engaged by the edge of the Work and operatively connected to said control member.

5. In a' stretching and guiding appara-' tus, a pair of units, each unit comprising a pair of rolls arranged to engage the WOI'k on opposite surfaces thereof, said rolls being mounted to be relatively moved to and from Work nipping position, electromagnetic means for relatively moving said rolls to control nipping position,'means connecting said electromagnetic means in an energizing circuit, a fixed contact member and a mov able'arm provided With a contact member engaging therewith in said circuit, yielding means for moving said arm to cause engagement of said contacts to complete said c1rcuit, a rotatably mounted control member for moving said arm to cause said members to moveto and from engaging position, and a feeler member POSllJlOIlGCltO be engaged by the edge of the Work and operatively connected to said control member,

6. In a stretching and guiding apparatus, a pair of units, each unit comprising a pair 'ofrolls arranged to engage the Work on opposite surfaces thereof, said rolls being mounted to be relatively moved to and from Work nipping position, electromagnetic means for relatively moving said rolls to control nipping position, means connecting said electromagnetic means in an energizing circuit, a fixedcontact member and a movable arm provided with a contact member engaging therewith in said circuit, a projection extending from said arm, yielding means for moving said arm to cause engage ment of said contacts to complete said circuit, a rotatably mounted control member providedwith a cam' surface engaging said projection formoving said arm to cause said members to move to and from engaging position. and a feeler member positioned to be engaged by the edge of the work and operatively connected to said control member.

7 Ina stretching and guiding apparatus, a pair of units, each unit comprising a pair of rolls arranged to engage the Work on opposite surfaces thereof, said rolls being mounted to be relatively moved to and from Work nipping position, electromagnetic means for relatively moving said rolls to control nipping position, means connecting said electromagnetic means in an energizing circuit, separable contact means in said circuit, yielding means for causing engagement of said contact means, means independent of said contact means for controlling engagement of said contact means, a feeler member positioned to be engaged by the edge of the Work operatively connected to said contact controlling means, and stop means provided on said feeler for limiting its movement in a direction to cause a separation of said contaot means. a

Y 8. In a stretching and guiding apparatus, a pair of units, each unit comprising a pair of rolls arranged to engage the Work on opposite surfaces thereof, said rolls being mounted to be relatively moved to and from Work nipping position, electromagnetic means for relatively moving said rolls to control nipping position, means connecting said electromagnetic means in an energizing circuit, separable contact means in said circuit, yielding means for causing engagement of said contact means, means independent of said contact means for controlling engagement of said contact means, a feeler member positioned to be engaged by the edge of the Work operatively connected to said contact controlling means, and stop means provided on said feeler for limiting its movement in both directions causing a separation of said contact means.

9. In a stretching and guiding apparatus, a pair of units, each unit comprising a pair of rolls arranged to engage the Work on opposite surfaces thereof, said rolls being mounted to be relatively moved to and from Work nipping position, electromagnetic means for relatively moving said rolls to control nipping position, means connecting said electromagnetic means in an energizing circuit, separable contact means in said circuit, yielding means for causing engagement of said contact means, means independent of said contact means for controlling engagement of said contact means, a casing containing said contact means, yielding means, and control means, and a feeler member positioned to be engaged by the edge if the Work and extending into said casing and operatively connected to said contact controlling means. I we r 10. In a' stretching and guiding apparatus, a pair of units, each unit comprising pair of rolls arranged to engage the Work on opposite surfacesthereof, said rolls be mg mounted to be relatively moved to and from work nipping position, electromagnetic means for relatively moving said rolls to control nipping position, means connecting said electromagnetic means in an energizing circuit,-separable contact means in said cir cuit, yielding means for causing engagement of said contact means, means independent of said contact means for controlling engagement of said contact means, a casing containing said contact means, yielding means and control means, a feeler member positioned to be engaged by the edge of the work and extending into said 'casing and operatively connected to said contact con trol means, and a projection carried bysaid feeler member for engaging said casing for limiting its-movement and causing separa tion of said contact means.

I 11. In a stretching and guidingapparatu's, a pair of units, each unit comprising apair of rolls arranged to engage the Work on opposite surfaces thereof, said rolls being mounted to be relatively moved to and from work nipping position, electromagnetic means for relatively moving said rolls to machine as a ground.

control nipping position, means connecting said electromagnetic means in an energizing circuit, separable contact means in said circuit, yielding means for causing engagement of said contact means, means independent of saidncontact means for controlling en- :mounted to be relatively moved to and from nipping POSltlOIl, electromagnetic work means for relatively moving said rolls to control nipping position, means connecting said electromagnetic means in an energizing circuit, separable contact means in said circuit, yielding means for causing engagement of said contact means, means independent of said contact means for controlling engagement of said contact means, a feeler member positioned to be engaged by the edge of the work operatively connected to said contact controlling means, and a condenser connected between one of the separable contact means and the framework of the 13. In a stretching and guiding'apparatus, a pair of units, each unit comprising a pair of rolls arranged to engage the work for moving said movable contact member to and from engaging position, a feeler member positioned to be engaged by the edge of the work and operatively connected to said control member, and a condenser connected between one of said contact members and a ground.

i l. In a stretching and guiding apparatus, a pair ofunits, each unit comprisinga pair of rolls arranged to engage the work on opposite 7 surfaces thereof, said rolls being mounted to be relatively moved to and from work nipping position, electromagnetic means for relatively moving said rolls to control nipping position, means connecting said electron'iagneticmeans in an energizing circuit, a fixed contact member and a movable contact member engaging therewith in said circuit, yielding means for causing engagement of said movable member with said fixed member, a rotatably mounted control member independent of saidcontact member for moving said movable contact member to and from engaging position, a feeler member positioned to be engaged by the edge of the work and operatively connected to said control member, and a condenser having one plate connected in the line between the fixed contact member and the source of supply and the other .plate grounded. V p

I11 testlmony whereof I afiix my signature.

FRANK A. LANE. o 

